The events calendar from Y charts is more than an earnings calendar as it covers a variety of events that are likely to impact your stock portfolio. These include events such as stock splits, earnings dividends, spin-offs, stock splits, and much more. So as you can see the calendar extends into events not covered by many of the others, but of course this comes at a price. However, they do offer a free 7-day trial so it is worth taking a look and seeing if this is the depth of information you need. Perhaps not immediately but maybe in the future as your portfolio grows in size.